The Paton Welding Journal, 2021, #7, 2-6 pages
Properties of butt joints of fine-sheet aluminium-lithium 1460 alloy, produced by friction stir and tig welding
A.G. Poklyatskyi, S.I. Motrunich and O.S. Kushnaryova
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
The article analyzes the structural features, characteristics of strength and life of butt joints of aluminium-lithium 1460
alloy with a thickness of 2 mm, produced by friction stir welding and argon arc welding using nonconsumable electrode.
It is shown that friction stir welding prevents the formation of a coarse-dendritic structure of welds, provides the
formation of permanent joints with a minimum level of stress concentration at the place of transition from the weld to
the base material and allows avoiding defects in the welds in the form of pores, oxide film and hot cracks, caused by
melting and crystallization of metal during fusion welding. 16 Ref., 7 Figures.
aluminium-lithium 1460 alloy, friction stir welding, hardness, defects, microstructure, tensile strength,
fatigue resistance, fine structure
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